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Fujisawa Pharmaceutical Co Ltd
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Fujisawa Pharmaceutical Co Ltd
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Application filed by Fujisawa Pharmaceutical Co LtdfiledCriticalFujisawa Pharmaceutical Co Ltd
Priority to ES8703777ApriorityCriticalpatent/ES2005749A6/en
Publication of ES2005749A6publicationCriticalpatent/ES2005749A6/en
Cephalosporin derivs. of formula (I) and their pharmaceutically acceptable salts are new: R1 = opt. protected amino R2 = H or hydroxy protecting gp. R3 = opt. protected carboxy or COO- Y = a gp. of formula (a) - (c) R4 = lower alkyl R5 = H or lower alkyl substd. by opt. prtected hydroxy X = acid residue n = 0 or 1 provided that when R3 = COO- then n = 0 and when R3 = opt. protected carboxy then n = 1 lower = 1-6C. - More specifically R3 = COO- Y = (a) R1 = NH2 or Ar(lower alkyl) amino (esp. NH2) R2 = H or tetrahydropyranyl (esp. H) R5 = H, hydroxyalkyl or carbonoyloxyalkyl.
ES8703777A1987-12-311987-12-31New cephalosporin derivs. useful as antimicrobials
ExpiredES2005749A6
(en)
beta-lactam compounds as antibacterial agents effective against methicillin-resistant and coagulase-negative Staphylococci and process for preparing the same